internal/source: support gitee.com and gitlab.*

Add two more patterns to our hard-coded list:

- gitee.com is a GitHub look-alike, and links behave the same.

- We'll assume any host of the form "gitlab.*" (e.g. "gitlab.ghn.vn") behaves
  like gitlab.com, which itself behaves like git.

Change-Id: I4e4110699086ecd303ec4a4e5a882fb66f36c3b9
Reviewed-on: https://team-review.git.corp.google.com/c/golang/discovery/+/570673
CI-Result: Cloud Build <devtools-proctor-result-processor@system.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>

internal/source/source.go

@@ -304,6 +304,15 @@ var patterns = []struct {
 		regexp.MustCompile(`^(?P<repo>gitlab\.com/[a-z0-9A-Z_.\-]+/[a-z0-9A-Z_.\-]+)`),
 		githubURLTemplates,
 	},
+	{
+		// Assume that any site beginning "gitlab." works like gitlab.com.
+		regexp.MustCompile(`^(?P<repo>gitlab\.[a-z0-9A-Z.-]+/[a-z0-9A-Z_.\-]+/[a-z0-9A-Z_.\-]+)(\.git|$)`),
+		githubURLTemplates,
+	},
+	{
+		regexp.MustCompile(`^(?P<repo>gitee\.com/[a-z0-9A-Z_.\-]+/[a-z0-9A-Z_.\-]+)(\.git|$)`),
+		githubURLTemplates,
+	},
 
 	// Patterns that match the general go command pattern, where they must have
 	// a ".git" repo suffix in an import path. If matching a repo URL from a meta tag,

internal/source/source_test.go

@@ -139,7 +139,7 @@ func TestModuleInfo(t *testing.T) {
 			"https://cue.googlesource.com/cue/+/v0.0.9/cuego/doc.go#1",
 		},
 		{
-			"gitlab",
+			"gitlab.com",
 			"gitlab.com/akita/akita", "v1.4.1", "event.go",
 
 			"https://gitlab.com/akita/akita",
@@ -147,6 +147,24 @@ func TestModuleInfo(t *testing.T) {
 			"https://gitlab.com/akita/akita/blob/v1.4.1/event.go",
 			"https://gitlab.com/akita/akita/blob/v1.4.1/event.go#L1",
 		},
+		{
+			"other gitlab",
+			"gitlab.66xue.com/daihao/logkit", "v0.1.18", "color.go",
+
+			"https://gitlab.66xue.com/daihao/logkit",
+			"https://gitlab.66xue.com/daihao/logkit/tree/v0.1.18",
+			"https://gitlab.66xue.com/daihao/logkit/blob/v0.1.18/color.go",
+			"https://gitlab.66xue.com/daihao/logkit/blob/v0.1.18/color.go#L1",
+		},
+		{
+			"gitee.com",
+			"gitee.com/290746987/GenMysqlProject", "v1.0.0", "main.go",
+
+			"https://gitee.com/290746987/GenMysqlProject",
+			"https://gitee.com/290746987/GenMysqlProject/tree/v1.0.0",
+			"https://gitee.com/290746987/GenMysqlProject/blob/v1.0.0/main.go",
+			"https://gitee.com/290746987/GenMysqlProject/blob/v1.0.0/main.go#L1",
+		},
 		{
 			"v2 as a branch",
 			"github.com/jrick/wsrpc/v2", "v2.1.1", "rpc.go",